Development and application of a preliminary design methodology for modern low emissions aero combustors

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dc.contributor.authorLiu, Yize
dc.contributor.authorSun, Xiaoxiao
dc.contributor.authorSethi, Vishal
dc.contributor.authorLi, Yi-Guang
dc.contributor.authorNalianda, Devaiah
dc.contributor.authorAbbott, David
dc.contributor.authorGauthier, Pierre Q.
dc.contributor.authorXiao, Bairong
dc.contributor.authorWang, Lu
dc.date.accessioned2020-04-24T14:36:30Z
dc.date.available2020-04-24T14:36:30Z
dc.date.freetoread2020-04-24
dc.date.issued2020-04-23
dc.description.abstractIn this article, a preliminary design framework containing a detailed design methodology is developed for modern low emissions aero combustors. The inter-related design elements involving flow distribution, combustor sizing, heat transfer and cooling, emission and performance are coupled in the design process. The physics-based and numerical methods are provided in detail, in addition to empirical or semi-empirical methods. Feasibility assessment on the developed work is presented via case studies. The proposed combustor sizing methodology produces feasible combustor dimensions against the public-domain low emissions combustors. The results produced by the physics-based method show a reasonable agreement with experimental data to represent NOx emissions at key engine power conditions. The developed emission prediction method shows the potential to assess current and future technologies. A two-dimensional global prediction on liner wall temperature distribution for different cooling systems is reasonably captured by the developed finite difference method. It can be of use in the rapid identification of design solutions and initiating the optimisation of the design variables. The altitude relight efficiency predicted shows that the method could be used to provide an indicative assessment of combustor altitude relight capability at the preliminary design phase. The methodology is applied and shows that it enables the automatic design process for the development of a conceptual lean staged low emissions combustor. The design evaluation is then performed. A sensitivity analysis is carried out to assess the design uncertainties. The optimisation of the air distribution and cooling geometrical parameters addresses the trade-off between the NOx emissions and liner wall cooling, which demonstrates that the developed work has potential to identify and solve the design challenges at the early stages of the design process.en_UK
dc.identifier.citationLiu Y, Sun X, Sethi V, et al., (2021) Development and application of a preliminary design methodology for modern low emissions aero combustors, Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, Volume 235, Issue 4, June 2021, pp. 783-806en_UK
dc.identifier.cris26827715
dc.identifier.issn0957-6509
dc.identifier.urihttps://doi.org/10.1177/0957650920919549
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/15413
dc.language.isoenen_UK
dc.publisherSAGEen_UK
dc.rightsAttribution-NonCommercial 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/*
dc.subjectPreliminary designen_UK
dc.subjectlow emissions combustorsen_UK
dc.subjectaero-engineen_UK
dc.subjectperformanceen_UK
dc.subjectoptimisationen_UK
dc.titleDevelopment and application of a preliminary design methodology for modern low emissions aero combustorsen_UK
dc.typeArticleen_UK

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